A room is in the form of cylinder surmounted by a Semispherical Vault. The base radius of hemisphere is one- half  the height of cylindrical part. Find total height of the room if it contains \(\frac{​1584​}{​7​} \ m^3\) of air. (Take \(\pi = \frac{22}{7}\))
 
Total height \(=\) ​​ \(m\)